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Anfon Glo ar Longau: Prif Borthladdoedd De Cymru, 1780-1913 1780 1799 1820 1840 1860 1880 (mil o dunelli) Caerdydd Casnewydd Abertawe 65 Llanelli Neath
18 245 1
85 175 232 65
166 490 493 212
1900
1913
(miloedd o dunelli) 1.92 0.82 0.52 0.38 0.20
5.86 17.52 24.58 1.89 3.98 6.14 0.94 2.38 4.50 0.20 0.28 0.33 0.29 0.28 0.33
Enw’r gweithfeydd a’r metelau a doddwyd
Enwau a dyddiadau’r cwmnïau sy’n gweithredu’r gweithfeydd
Gweithfeydd Glandw ˆ r Langyfelach (copr, plwm, arian)
(a) Dr John Lane (b) Robert Morris (c) Morris Lockwood a’i Gwmni
1717 – 26 1726 – 27 1726 – 48
Gweithfeydd Cambrian (copr)
(a) James Griffiths a’i Gwmni (b) Richard Phillips (c) Robert Morris
1720 – c.1730 1730 – 35 1735 – 45
Y Garreg Wen (copr)
(a) Cwmni Copr y Garreg Wen a elwir hefyd yn John Hoblyn a’i Bartneriaid 1737 – * (b) Joseph Percival a’i Gwmni 1744 – 64 (c) Cwmni Copr John Freeman 1764 – 1870/1 (d) Williams, Foster a’i Gwmni a Vivian a’i Feibion c.1871 – 74 (e) Vivian a’i Feibion 1874*– 1924 (f) Cynhyrchwyr Copr Prydain Cyf. 1924 – 28
(arian a phlwm) (arian a phlwm)
Middle Bank neu Blas Canol (plwm) (copr) (copr) (copr) (copr) (copr) (copr) (copr)
(a) (b) (c) (d) (e) (f) (g) (h)
Upper Bank neu Blas Uchaf (plwm a sinc) (copr a phlwm) (copr) (copr) (copr) (metel melyn) (copr a sinc) (copr) (copr a sinc)
(a) (b) (c) (d) (e) (f) (g) (h) (i)
Chauncey Townsend a John Smith c.1757 – * Joseph Rotton a’i Gwmni 1777 – * Cwmni Glofa Parys 1782 – 1804 1804 – c.1825/6 Williams a Grenfell Owen Williams 1828 – 33* Cwmni Metel Muntz Patent 1838 – 42 Pascoe Grenfell a’i Feibion Cyf. 1850 – 90 Pascoe Grenfell a’i Feibion Cyf. 1890 – 92 Williams Foster a’i Gwmni Cyf. a Pascoe Grenfell a’i Gwmni Cyf. 1892 – 1924 (j) Cynhyrchwyr Copr Prydain Cyf. 1924 – 8
Hafod (copr, arian, aur) Morfa (copr) (copr) (copr) (copr) Nant-rhyd-y-Vilias (copr a haearn trwy ail-doddi tomenni)
Chauncey Townsend a’i Gwmni 1755 – 64 John Rotton a’i Gwmni 1765 – 9 George Pengree a’i Gwmni 1769 – 85* Cwmni Stanley 1787 – c.1804 c. 1804 – c.1825/6 (Owen) Williams a Grenfell Pascoe Grenfell a’i Feibion 1828 – 90 Pascoe Grenfell a’i Feibion Cyf. 1890 – 3 Williams Foster a’i Gwmni Cyf. a Pascoe Grenfell a’i Gwmni Cyf. 1893 – 1924
(a) (b) (c) (d)
Vivian a’i Feibion
1810 – 1924
Williams Foster a’i Gwmni H.R. Merton a’i Gwmni Williams Foster a’i Gwmni Williams Foster a’i Gwmni a Pascoe Grenfell a’i Feibion Cyf.
1835 – 80 1880 1880 – 93
Meistri Bevan
1814 – cyn 1817
1893 – 1924
* unknown or approximate date